Combined tank and core for induction apparatus



Aug. 4, 1925. 1,548,658

. F. J. CHAMPLIN COMBINED TANK AND CORE FOR INDUCTION APPARATUS Filed Aug. 16, 1921 Inventor: FramKlin J. Chaa'nfalin,

I 9 r f-' lt atented 4:, 194th;

FRANKLIN Zi'. CHAMPLIN, 03. PITTSFIELD, MASSACHUSETTS, ASSIGNOB TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YGPIK.

COMBINED TANK AND GORE FQR INDUCTION APEPAEATUS.

Application filed August 16, 1921.

T 0 all 107mmz't may concern.

Be it known that I, FRANKLIN J. C tati- PLIN, a citizen of the United States, residing at Pittstield, county of Berkshire, State oi hiiassachusetts, have invented certain new d useful improvements in Combined .i anks and Cores for Induction Apparatus, of which the following is a specification.

My invention relates to induction apparatus and more particularly to an lmproved form of combined tank and core adapted to contain a quantity of cooling liquid, such as oil. to absorb and carry away heat generated in the core during the operation of the apparatus.

One object of the invention 18 to provide hollow laminated core so constructed as to be impervious to oil or other cooling liquid, the core thus being adapted to constitute a portion of the Oll retaining structure or tank. This feature of the invention permits areduction in the cost of labor and material necessary in the provision oi frame and tank structure provided in such apparatus for the purpose of supporting the core and holding the oil or other cooling liquld. A further object of the invention is to provide suitable tank structure so joined to and associated with the laminated core that together the core and tank structure may form a tank or container to retain a body of liquid tor cooling and insulation purposes.

The invention is illustrated in the accompanying drawing as embodied in the construction oi an induction regulator, although it will be apparent that the invention may be applied with advantage in the construction of other forms of apparatus in which the hollow laminated cores are used.

in the induction regulator shown in the drawing the lan'iinated core 1 is built up of r)? thin soit iron annular rings secured together by some suitable adhesive substance, such as shellac, or some suitable phenol condensation product such as bakelite, which will not only secure the laminations firmly together, but will als seal the joints between them citiciently against any leakage of the cooling liquid. This construction may be attained by shellacking both sides of each ring, allow- Serial No. 492,751.

ing the shellac to dry, stacking the rings to gether in a temporary frame, pressing the rings lirmly together, heating the rings and shellac by inserting the rotor and over-exciting it or otherwise, and allowing the rings and shellac to cool and the shellac to solidity. The top and bottom core flanges, 2 and 3, are secured to the core in a. similar manner so as to provide tight joints. The bottom plate 4-, formed with a step bearing 5 for a rotor, is joined to the bottom core flange 8 by a cylindrical tank section 6, these parts being shown bolted. together to provide tight joints. A corrugated tank section 7 with a bottom flange 8 and a top flange 9 is bolted to the top core flange 2 and a cover 10, formed with a bearing 11 for the rotor, is provided above the flange 9.

The parts described above enclose a space in which the rotor 12 may revolve and which is adapted to contain a body of cooling liquid, or oil, which will absorb heat generated in the core and convey it to other portions of the structure, principally to the corrugated tank section 7, where it is given up and conveyed to the outside air.

it will be seen that the laminated core 1 forms a portion of the tank wall and thatthis construction therefore obviates the ne cessity of providing a separate entire tank to hold the oil. The outer surface oi the core 1 is also exposed directly to the outside air and much of the heat generated in the core therefore dissipated directly to the outside air from this surface.

Having illustrated and described the de tails of one form of my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. An induct-ion apparatus including a hollow laminated core, the laminations of the core being secureu together by an adhesive substance to render the joints between said laminations impervious to a cooling liquid contained within said core.

An induction apparatus including a hollow laminated core adapted to surround a body of cooling liquid, the joints between the laminations of the core containing a substance to render said joints impervious to the cooling liquid, and means secured to the core and cooperating therewith to form a tank for the cooling liquid.

3. An induction apparatus including a hollow laminated core adapted to surround u body of cooling liquid, the huninzitiens of the core being secured together by an adhesive substance to render the joints between seesae said lzuninations impervious to the cooling liquid, and means secured to the core and co ope 'ating therewith to form :1 tank for the ceiling liquid.

In witness whereof, I have hereunto set my hand this 12 day of August, 1921.

FRANKLIN J. CHAMPLIN.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,548,658, granted August 4, 1925, upon the application of Franklin J. Champlin, of Pittsfield, Massachusetts, for an improvement in Combined Tanks and C ores for Induction Apparatus, an error appears in the printed speclfication requiring correction as follows: Page 1, strike out lines 91 to 96 comprising claim 1, and insert the following as claim 1:

1. An inzlmtion appo /"atus inolucling a hollow laminated 0076 adapted to 8m"- round (A body of cooling liquid, the joints between the laminations of the core 00ntaining a substance to render said joints impervious to the cooling lignicl; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Olfice.

Signed and sealed this 13th day of ()ctober, A. D. 1925.

[SEAL] KARL FENNING,

Acting Commissioner of Patent Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,548,658, granted August 4., 1925, upon the application of Franklin J. Cham'plin, of Pittsfield, Massachusetts, for an improvement in Combined Tanks and Cores for Induction Apparatus, an error appears in the printed specification requiring correction as follows: Page 1, strike out lines 91 to 96 comprising claim 1, and insert the following as claim 1:

1. [1n mluctz'on apparatus z'noludiny a hollow laminated core adapted to 8m"- ronnd a body of cooling Zion-id, the joints between the Zamnat-ions of the core cantdint'ng a substance to wonder said joints imporoious to the cooling liquid,-

= and that the said Letters Patent should he read With this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 18th day of October, A. D. 1925.

[SEAL] KARL FENNING,

Acting Commissioner of Patents. 

